Macromolecule Content

• Total Structure Weight: 11.42 kDa 
• Atom Count: 632 
• Modelled Residue Count: 77 
• Deposited Residue Count: 103 
• Unique protein chains: 1

1BQ0

J-DOMAIN (RESIDUES 1-77) OF THE ESCHERICHIA COLI N-TERMINAL FRAGMENT (RESIDUES 1-104) OF THE MOLECULAR CHAPERONE DNAJ, NMR, 20 STRUCTURES

• DOI: 10.2210/pdb1BQ0/pdb
• BMRB: 4227
• BMRB: 4228

• Classification: CHAPERONE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1998-08-20 Released: 1999-06-15 
• Deposition Author(s): Huang, K., Flanagan, J.M., Prestegard, J.H.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: ZERO VIOLATIONS/ENERGY (SEE PAPER *JRNL*) 

Literature

The influence of C-terminal extension on the structure of the "J-domain" in E. coli DnaJ.

Huang, K., Flanagan, J.M., Prestegard, J.H.

(1999) Protein Sci 8: 203-214

• PubMed: 10210198 
• DOI: 10.1110/ps.8.1.203
• Primary Citation of Related Structures:  
  1BQZ, 1BQ0


• PubMed Abstract: 
  

Two different recombinant constructs of the N-terminal domain in Escherichia coli DnaJ were uniformly labeled with nitrogen-15 and carbon-13. One, DnaJ(1-78), contains the complete "J-domain," and the other, DnaJ(1-104), contains both the "J-domain" and a conserved "G/F" extension at the C-terminus. The three-dimensional structures of these proteins have been determined by heteronuclear NMR experiments. In both proteins the "J-domain" adopts a compact structure consisting of a helix-turn-helix-loop-helix-turn-helix motif. In contrast, the "G/F" region in DnaJ(1-104) does not fold into a well-defined structure. Nevertheless, the "G/F" region has been found to have an effect on the packing of the helices in the "J-domain" in DnaJ(1-104). Particularly, the interhelical angles between Helix IV and other helices are significantly different in the two structures. In addition, there are some local conformational changes in the loop region connecting the two central helices. These structural differences in the "J-domain" in the presence of the "G/F" region may be related to the observation that DnaJ (1-78) is incapable of stimulating the ATPase activity of the molecular chaperone protein DnaK despite evidence that sites mediating the binding of DnaJ to DnaK are located in the 1-78 segment.

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Related Citations: 

• 1H and 15N Magnetic Resonance Assignments, Secondary Structure, and Tertiary Fold of Escherichia Coli Dnaj(1-78)
  Hill, R.B., Flanagan, J.M., Prestegard, J.H.
  (1995) Biochemistry 34: 5587

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Organizational Affiliation: 

Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DNAJ	A	103	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P08622 (Escherichia coli (strain K12)) Explore P08622  Go to UniProtKB:  P08622

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 50 
• Conformers Submitted: 20 
• Selection Criteria: ZERO VIOLATIONS/ENERGY (SEE PAPER *JRNL*) 
• OLDERADO: 1BQ0 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1998-08-20 
• Released Date: 1999-06-15 
Deposition Author(s): Huang, K., Flanagan, J.M., Prestegard, J.H.

Revision History  

• Version 1.0: 1999-06-15
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance